Put all ingredients, except meat into greased 9x13" pan. Lay meat on top of rice. Season meat as desired. Cover with foil. Bake at 350 for 1 1/2-2 hours. I like to take the foil off when it gets near the end, to brown the meat a little.
I make my own cream of mushroom soup because of food allergies, but also because it tastes much better!
If you are using jasmine rice, increase broth by 1/2 cup per cup of rice, so use 2 cups for the smaller batch or 3 cups for the larger batch.
Grease a lasagna pan.
Saute onion in butter in 4 qt. pan. Add salt and pepper as it is cooking. Add milk and chicken broth and bring to a simmer. Combine heavy cream and cornstarch. Add to pan and stir until it is blended. It should begin thickening very quickly. Turn off heat and add sour cream and cheese. Spread potatoes in greased lasagna pan. Pour milk sauce over potatoes.
Cover with foil and bake at 375 for 2 hours or more. Let set for 15 minutes or so and stir before serving.
For the chicken broth, I use about 2 tsp. Better than Bouillon Organic Chicken Base and add water to make 1 cup. This ensures that the recipe remains gluten-free and soy-free.